Feature
Username and Minimal Profile
You pick a unique username (@username) and a display name. The phone number is used only at first launch for OTP verification; it isn't stored long-term and isn't shown on your profile.
Highlights
- Unique @username — profanity filter, 5 changes/month
- Display name (real-name format); @username shown beneath it
- Phone for one-time verification only, never shared
- Avatar auto-generated or picked from gallery
Overview
Zerolog identity asks for the minimum. You pick a unique username (@username): lowercase letters, digits, and underscores, passed through a profanity filter, changeable at most 5 times a month. This username is how people who search for you can find you.
You also have a display name; it doesn't have to be unique but follows a real-name format. On contact cards, your @username is shown beneath your display name so it's clear who is who.
Your phone number is used only at first sign-up for SMS verification (OTP) — a defense against fake accounts and spam. After verification the number isn't stored long-term, isn't shown on your profile, and isn't shared with anyone. Your avatar is generated from a seed or picked from your gallery.
Related features
Internet-free Messaging — Bluetooth & Local Network
When there's no signal, Bluetooth Low Energy and the local network take over; the device next to you stays in reach. Chat and games keep going with no internet. Whichever channel is used, no message is stored on our servers.
On the Internet: End-to-End Encrypted Messaging
On Wi-Fi or mobile data, Zerolog opens an end-to-end encrypted (E2EE) channel in parallel. Keys are generated on your device, never leave for a server. Message content can be decrypted only on the two devices — no one, including us, can read it.
Ephemeral (Self-Destructing) Messages
Each chat gets a lifetime: burn on read, seconds, minutes, hours, or wipe-on-session-end. When the timer runs out, the message is gone from both devices. No undo — because there was no save.
Peer-to-Peer Voice Calls
Zerolog offers encrypted peer-to-peer voice calls. Audio flows directly between the two devices and rings with a native call UI on the lock screen. Call history is not kept.